Accession Number : AD0686745

Title :   ENERGY LEVELS OF CHROMIUM ION PAIRS IN RUBY.

Descriptive Note : Report for Jan-Jun 68,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Kisliuk,Paul P. ; Chang,Nien C. ; Scott,Peter L. ; Pryce,Maurice H. L.

Report Date : 20 FEB 1969

Pagination or Media Count : 35

Abstract : The lower energy levels of a number of transitions due to second, third, and fourth nearest neighbor chromium ion pairs in ruby are located by measuring the temperature dependence of optical absorption. Energy level diagrams are constructed, from which many of the observed lines are identified. The measurements are consistent with earlier results for the ground states of first, third,, and fourth nearest neighbor pairs. The ground-state levels of the second nearest neighbor pairs are describable by an isotropic exchange interaction. The ground-state coupling parameters for the first four nearest neighbor types are used to estimate the Neel and Curie-Weiss temperatures for Cr2O3. (Author)

Descriptors :   (*CHROMIUM, *ATOMIC ENERGY LEVELS), (*RUBY, CHROMIUM), CHROMIUM COMPOUNDS, ELECTRON TRANSITIONS, OXIDES, ATOMIC SPECTROSCOPY, DOPING, MAGNETIC PROPERTIES

Subject Categories : Lasers and Masers
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE